Chemistry, asked by sanika115, 4 months ago

what changes do we observe when a chemical reaction occur

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Answered by Anonymous

Answer:

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

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Answered by aa2061458

Explanation:

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

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